Guided by the ecological civilization thought of Xi Jinping，this paper develops a green economydevelopmentindex in new era of China according to the concept of ecological priority and green development and calculates the green development level of the country and all provinces. It shows that the green development index in China reached 66.44 from 53.03 in the 13th Five-year plan. In the secondary index，the sustainable development index reached 48.29 from 29.66 and the resource utilization index reached 82.78 from 76.38 and the environmental protection index reached 74.29 from 60.83. Generally speaking，developed regions do better in green development than developing regions，especially in resource utilization and environmental protection while the gap is narrowing. Western regions do better in sustainable development than middle and eastern regions. Promoting green development in the future，we should strengthen the sustainable development and continue improving the efficiency of resource utilization and strengtheningenvironmental protection. Developed regions should speed up the adjustment of energy structure and Promote ecosystem value. Developing regions should accelerate the pace of industrial structure transformation and increase the application of green technology to create new economic growth point.